Answer:
B: 9d^8
Step-by-step explanation:
Simplify the expression using the rules of exponents.
24000000. 1000000*24= 24000000, therefore, a million days ago in hours would be 24000000.
The new matrix that is formed by the 3A + B is given below. Then the value of x is 102.

<h3>What is the matrix?</h3>
A matrix is a specific arrangement of items, particularly numbers. A matrix is a row-and-column mathematical structure. The
element in a matrix, such as M, refers to the i-th row and j-th column element.
The matrices are given below.

Then the new matrix is given as 3A + B. Then we have

More about the matrix link is given below.
brainly.com/question/9967572
#SPJ1